Lighting device



FIG. 1 is a front, left side and top perspective view of an embodiment of a lighting device showing the new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a rear side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a rear, right side and bottom perspective view of an embodiment of a lighting device showing the new design. 

The ornamental design for a lighting device, as shown and described. 